8NPM

The 8NPM is a high efficiency, (96dB 1watt / 1 meter) 8-inch mid-woofer with extended mid frequency response and high power handling capability. The 8NPM uses a lightweight half pressed paper cone along with a double roll fabric surround. Spider is made of Nomex material with optimized shape for well controlled pistonic motion. The used high quality components ensure long lasting performance even in high powered applications. The chosen material combination provides remarkable strength, high efficiency and sustained output under extreme conditions.

Power Handling
The voice coil featuring Kapton former material capable of withstanding peak temperatures in excess of 280C, well beyond the thermal requirements of modern audio systems. Former strength provides the ideal transfer of power between the voice coil and the cone assembly and assists in reducing distortion artifacts. By combining this material with state of the art adhesives and our winding voice coil technology, the 8NPM delivers incredibly high performance.

The 8NPMX8-157 is an 8-inch high-efficiency neodymium mid-woofer designed for professional two-way, multi-way, and line array systems requiring high sensitivity (96 dB 1W/1m), extended mid-frequency response, and sustained high-power operation. It features a 2-inch CCAW voice coil on a Kapton former with peak temperature tolerance exceeding 280 degC, a lightweight half-pressed paper cone with a double roll fabric surround, and a Nomex spider with optimized geometry for controlled pistonic motion. With a low Qts of 0.29 and strong neodymium motor (Bl 14.2 T.m), the motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.

The driver requires active DSP crossover management in both configurations. In vented mid-woofer use, a high-pass filter in the range of 53-72 Hz (24 dB/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with a typical crossover to a high-frequency driver at 1.5-3 kHz. In sealed midrange use, a high-pass filter in the range of 180-350 Hz is recommended depending on enclosure volume and system architecture. In both cases, appropriate limiting is required to manage mechanical stress during sustained operation, though the Kapton former provides exceptional thermal headroom.

This driver is particularly effective in professional touring line arrays, compact 2-way portable loudspeakers, multi-way point-source cabinets, stage monitors, and installation systems where versatility across mid-woofer and midrange roles, high sensitivity, high power handling, and extended mid-frequency performance are priorities. The neodymium motor, Kapton former, and aluminum basket provide consistent, durable performance in demanding professional environments.